(強調看法)
used to emphasize your opinion
Is he stupid or what?他真是傻透了。
(表示不肯定)還是別的什麼
used when you are not sure about sth
I don't know if he's a teacher or what.我不知道他是個教師還是別的什麼。
釋義來自《牛津高階英漢雙解詞典》第 9 版